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Debian – How to install PCI-1610 4-port RS-232 PCI communication card

PCI-1610 is an Advantech 4-port RS-232 Universal PCI Communication Card with comes very handy if you need to connect more devices using serial port.

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Adblock Plus available on Google Play

Adblock Plus appeared yesterday on Google Play. It’s a great news as it means better browsing experience. Application acts as transparent proxy so you can use Google Chrome without any ads.

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OpenWRT on Ubiquiti AirRouter

Recently I installed OpenWRT on Ubiquiti AirRouter as original firmware lacks in couple of areas. Installation is easy and straightforward as all you need to do at the time of writing this post is to use Attitude Adjustment release.

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SysOps

Simple shell script to backup MySQL databases

Simple shell script to backup MySQL databases.

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Ubuntu – Nexus 7 basics

I spent all day testing custom roms on Nexus 7 but finally decided to roll back everything and use stock rom with encryption. I will describe here how to unlock device, install recovery image, return to stock rom and root Nexus 7 (Android 4.2) using Ubuntu.

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Debian – How to read DHCP packets

I am playing with DHCP option 82 so I need to read DHCP packets. The easiest way to do this is to use dhcpdump by Edwin Groothuis because of very simple usage and friendly output.

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Debian – How to change time zone

This is rarely performed task but an easy one. To change time zone you need to reconfigure tzdata package.

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DevOps

How to remove comments from a shell script

The easiest way to remove comments from a shell script is to use sed (stream editor for filtering and transforming text) command.